Got some more info at NRH today.
Descendants of George Laing and Isabella Taylor:
Alexander Laing born 13 May 1855 in Carnbee, Colliery Labourer, died 26 Nov 1913 at 9 Stationhead Road, Lochgelly. Never married.
William McCulloch Laing born 3 Mar 1859 in Carnbee, shoemaker, died 7 Oct 1944 at main Street, Colinsburgh. He married (1) Catherine Robertson Buist Berwick on 9 Jun 1882 at Largoward, she was born 10 Dec 1860 at Largoward and died 11 Nov 1909 at Church Place, Largo, and (2) Margaret Anderson Tait on 2 Aug 1912 at the Anchorage, Lower Largo, she was born 24 May 1865 at Largo and died 10 Feb 1947 at Main Street, Colinsburgh.
George Laing born 5 Jan 1862 in Carnbee, Ordnance Worker, died 18 Jun 1928 at 5 Mill Street, Dunfermline. He married Henrietta Jane Low Jameson.
Thomas Laing born 14 Dec 1863 in Carnbee, Oil Work Labourer/Insurance Agent, died 5 Apr 1943 at 58 Small Street, Lochgelly. He married Christina Braid on 18 Dec 1885 in Kinghorn, she was born 25 Dec 1864 in Kirkcaldy and died 11 Nov 1928 in Largo Cottage, Glencraig, Lochgelly.
I ran out of time about this point, but found that Thomas and Christina had a son called George who was born c1889. He was a coal miner and married Julia Rennie Macpherson on 1 jun 1917 at 7 Stationhead Road, Lochgelly.